Cleaner for cultivator-disks



(No Model.) v

A. CALDWELL GLEANER FOR OULTIVATOR DISKS.

Patented July 25, 1893.

UNITED STATES PAT NT Curios.

ALEXANDER CALDWELL, OF ESSEX, IOWA.

CLEANER FOR CULTIVATOR-DISKS.

SPECIFICATION forming part of Letters Patent No. 501,917, dated July 25, 1893.

' Application filed February 14, 1893. Serial No. 462,274. (No model.)

To aZZ whom, it may concern.-

Be it known that I, ALEXANDER CALDWELL, a citizen of the United States, residing at Essex, in the county of Page and State of Iowa, have invented certain new and useful Improvements in Cleaners for Cultivator-Disks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention is an improvement in scrapers for harrow and cultivator disks and consists in the novel features of construction hereinafter described, reference being had to the accompanying drawings which illustrate two forms in which I have contemplated embodying my invention, and said invention is fully disclosed in the following description and claims. 7

Referring to the said drawings Figure 1 represents an axle providedwith a pair of disks having my improved cleaner applied thereto. Fig. 2 is a side elevation of a disk showing the position of the cleaner with respect thereto. Fig. 3 is a detail view of the cleaner knife with its attaching means. Fig. 4 is a similar view of the knife detached. Fig. 5 is a sectional view of a disk provided with a slightly different form of knife. Fig. 6 is a detail view of said knife.

The object of my invention is to provide a cleaner or scraper for removing the soil from cultivator and harrow disks, which is rigidly secured to the axle upon which the disks rotate.

In the drawings Arepresents an axle or shaft connected with a harrow or cultivator frame the said shaft or axle being in this instance rigidlysecurcd adjacent to its centerin a sleeve 11 attached to a vertical standard B adapted to be connected with a cultivator frame.

0 0 represents a pair of revolving disks provided with collars c or sleeves which engage the shaft or axle A.

D represents a bracket provided with a sleeve d to engage the axle A and a set screw d for securing said sleeve rigidly upon the axle in any desired position.

E represents the cleaning knife or blade which in this form of my invention is provided with a shank 6 extending substantially at right angles to the blade and provided with a slot respect to the disk 0, as will be clearly seen by reference to Figs. 1 and 3. The sleeve d of the bracket D will be placed upon the shaft or axle on the side of the disk adjacent to its concave portion and the sleeve and bracket will be secured in a position upon the axle slightly inclined to the rear of the axle as indicated in Fig. 2 in which the arrow a: represents the direction of travel of the disk 0. The disks 0 will be held against lateral movement upon their supporting axle by means of suitable collars o as shown in Fig. 1.

It isobvious that where the sleeve d of the bracket D is adjacent to one end of the supporting axle A as shown at the right in Fig. 1, the collar 0' may be dispensed with or may be used to prevent strain upon the said sleeve which would tend to move the cleaning knife away from the disk.

In Figs. 5 and 6 I have shown a slight modification of my-invention in which 0' represents the disk mounted upon an axle A and held in position by a collar 0 the portion of said axle adjacent to the concave side of the disk is made square or polygonal as shown at a and beyond this shouldered portion is a screw threaded portion a. E represents the cleaning knife which in this instance is substantially flat and has its shank provided with a polygonal aperture 6 which engages the polygonal portion ,a of the axle so as to prevent the said knife from rotating. A nut e is then screwed on the threaded portion a of the axle to hold the knife in position. This form of knife is more especially adapted for use with plain disks like the one shown in Fig. 5, but it may also be used with the form of disk shown in Figs. 1 and 2 by shortening the sleeves of such disks.

What I claim, and desire to secure by Letters Patent, is-- 1. The combination withthe cultivator disk and its supporting axle, of a collar adj ustably secured to said axle, a cleaning knife having a shank at an angle to the cleaning edge, said shank being slotted and a bolt passing through said slot for securing said knife adj ustably to the said collar, substantially as described.

2. The combination with a cultivator disk and a non-rotatable supporting axle therefor, of a collar adjustabl y secured to said axle provided with an arm extending in a direction substantially parallel to the axle, a cleaning knife having a shank extending at an angle to the knife and provided with a slot, and a 

